Chimney Lead Flashing
Failed chimney flashings replaced with properly dressed lead — the permanent fix for chimney leaks.
- Code 4 and Code 5 sheet lead
- Chased into brickwork for a lasting seal
- Fixed pricing with no hidden extras
Chimney Flashings Are the Number One Cause of Roof Leaks
The junction between a chimney stack and the roof tiles is one of the most vulnerable points on any roof. Lead flashings — step flashings down the sides, a back gutter behind and an apron across the front — seal this gap. When flashings lift, crack or pull out of the brickwork, rainwater runs straight down the chimney and into the roof structure. The result is damp chimney breasts, stained ceilings and, over time, rotten timbers.
Radiant Roofing replaces chimney lead flashings across Kent, Sussex and Surrey. We strip the old lead, chase new flashings into the mortar joints, dress Code 4 or Code 5 sheet lead to the correct profile and point with a durable, flexible sealant. The result is a permanent, watertight seal that will outlast the roof tiles around it.
How It Works
Chimney Inspection
We inspect the existing flashings, check for signs of water ingress and identify every detail that needs renewing — step, back gutter, apron and soakers.
Fixed Quote
You receive a clear quote covering scaffold, lead supply, installation and pointing — no hidden charges.
Lead Flashing Installation
We strip old flashings, chase into brickwork at the correct depth, dress new lead to profile and point all chase lines with flexible sealant.
Guarantee
All chimney flashing work is backed by our workmanship guarantee. Properly installed lead flashings last 50 years or more.
Chimney Inspection
We inspect the existing flashings, check for signs of water ingress and identify every detail that needs renewing — step, back gutter, apron and soakers.
Fixed Quote
You receive a clear quote covering scaffold, lead supply, installation and pointing — no hidden charges.
Lead Flashing Installation
We strip old flashings, chase into brickwork at the correct depth, dress new lead to profile and point all chase lines with flexible sealant.
Guarantee
All chimney flashing work is backed by our workmanship guarantee. Properly installed lead flashings last 50 years or more.
What Our Chimney Flashing Service Includes
We replace all types of chimney lead flashing — from a single lifted apron through to a complete set of step flashings, back gutter and soakers on a large stack.
What Does Chimney Flashing Cost?
Typical price range
£300 – £1500
VAT may apply depending on the project
Factors that affect the price:
- 1Number of flashing elements (step, back gutter, apron, soakers)
- 2Size and complexity of the chimney stack
- 3Lead code and weight required
- 4Scaffold and access requirements
Replacing a single apron or a few step flashings costs £300 to £600. A complete chimney reflash — all four sides with back gutter and soakers — runs £800 to £1,500 including scaffold. We provide a fixed quote after inspection.
What Our Customers Say
Verified Google ReviewsJane S.
Kent
They were very friendly, professional and polite and left the site immaculate at the end of the day. I would thoroughly recommend them to others. The work was carried out to a very high standard.
Peter B.
East Sussex
Excellent work, highly recommended! Very knowledgeable, by far the best roofing company we have ever used and super nice guys.
Sarah M.
Surrey
Radiant Roofing completed our roof repair quickly and professionally. Great communication throughout and a fantastic result.
Frequently Asked Questions
Chimney flashing replacement typically costs between £300 and £1,500. A partial reflash — replacing a few lifted step flashings or a failed apron — costs £300 to £600. A complete reflash of all flashings around a chimney stack runs £800 to £1,500 including scaffold. We always provide a fixed quote after inspection.
Properly installed lead chimney flashings last 50 years or more. Lead is the most durable flashing material available — it does not rust, degrade in UV light or become brittle with age. The key is correct installation: adequate chase depth, proper dressing and flexible pointing.
In some cases a repair is sufficient — if a single step has lifted or a chase line needs repointing. However, if the lead is thin, patched or has been poorly installed, replacement is more cost-effective long term. We will advise honestly during inspection.
We cover Kent, East Sussex, West Sussex and Surrey. Our teams regularly replace chimney flashings in Tunbridge Wells, Crowborough, Sevenoaks, Tonbridge, Uckfield, Haywards Heath, East Grinstead and surrounding areas.
Yes. All chimney flashing work is backed by our workmanship guarantee. We use Code 4 and Code 5 lead sheet to British Standards, ensuring the material and installation will last for decades.
Contact Us!
Get in touch with us!
Looking for a free quote? Just fill in the form below, and we'll take care of the rest!
Contact Information:
Mobile (24/7): 07753 165 005
Landline (Office Hours): 01892 356 967
Email: contact@radiantroofing.co.uk
Head Office:
Address:
Alpha House
Crowborough Hill
Crowborough
TN6 2EG
Opening Hours:
Monday to Friday: 7:30 am – 6:00 pm
Saturday: 7:30 am – 12:00 pm
Sunday: Closed (mobile still available)
Our Mobile and Email is available 24/7
